A 4×6" print at 300 DPI needs about 1200×1800 px (~2.2 MP). Lower DPI needs fewer pixels if viewing distance allows.
Recommended pixels
For photo-quality close viewing, aim for 300 DPI (1200×1800). For posters viewed from farther away, 150–200 DPI can work.
Pixels needed by DPI
| DPI | Pixels |
|---|---|
| 72 | 288 × 432 |
| 100 | 400 × 600 |
| 150 | 600 × 900 |
| 200 | 800 × 1200 |
| 240 | 960 × 1440 |
| 300 | 1200 × 1800 |
| 600 | 2400 × 3600 |
FAQ
How many pixels for a 4×6" print?
At 300 DPI: 1200×1800. See the table for other DPI targets.